甲基化 Methylation
（重定向自Methylating agent）
甲基化（英语：methylation）指向底物引入甲基的过程，一般是以甲基取代氢原子。
在生物系统内，甲基化是经酶催化的，这种甲基化涉及重金属修饰、基因表达的调控、蛋白质功能的调节以及核糖核酸（RNA）加工。重金属修饰可以在生物系统外发生。组织样本的化学甲基化也是组织染色的方法之一。
Methylating agent
中文百科
英语百科
Methylation 甲基化
（重定向自Methylating agent）
In the chemical sciences, methylation denotes the addition of a methyl group on a substrate or the substitution of an atom or group by a methyl group. Methylation is a form of alkylation with a methyl group, rather than a larger carbon chain, replacing a hydrogen atom. These terms are commonly used in chemistry, biochemistry, soil science, and the biological sciences.
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